Clean Water Act discharge permit · NPDES MDG499945

CATHEDRAL STONE PRODUCTS, INC., Hanover, MD: NPDES MDG499945 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance

CATHEDRAL STONE PRODUCTS, INC. holds NPDES permit MDG499945. EPA’s file records it issued November 16, 2022 and expiring April 30, 2027. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for CATHEDRAL STONE PRODUCTS, INC.: its NPDES ID, its permit type and status, its dates, its address in Hanover, Maryland. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MDG499945.

Identity

Facility as filed	CATHEDRAL STONE PRODUCTS, INC.
Permittee as filed	CATHEDRAL STONE PRODUCTS, INC.
NPDES ID	MDG499945
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	November 16, 2022
Expiration date	April 30, 2027
Issuing agency	MARYLAND DEPARTMENT OF THE ENVIRONMENT
Address	Hanover, MD 21076
Receiving water impaired	303(D) Listed
Subwatershed	Deep Run-Patapsco River (HUC 020600031102)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

0Pollutants on file
0Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

EPA’s limits and effluent violation files hold no pollutant row for NPDES MDG499945.

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MDG499945.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MDG499945 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

This public-records page covers Clean Water Act discharge permit NPDES MDG499945, held by CATHEDRAL STONE PRODUCTS, INC. of Hanover, MD, which is listed as Effective with a Minor discharger class, issued November 16, 2022 and expiring April 30, 2027. The register reports 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance, and states that EPA's file holds no violation for this permit. Subwatershed Deep Run-Patapsco River (HUC 020600031102) is listed as the watershed for this discharge.